Help a newbie with TikTok ads.

Hello, i decided i want to take a close look into tiktok ads and move away from the gray area of Adult Cpa.I have some questions if you can answer them i'd be grateful!

1.I signed up for a TikTok ad account and i've seen it requires a business website to get approved.Since i don't have one, would a shopify store be enough?

2.I seen that i can only target the country of my residency.If i want to target US audience is it safe to buy a US tiktok ad account from a website?

3.Can i promote CPA offers on tiktok?Let's say Crypto, Cbd oil, weightloss etc?Do i need a cloaker for that?

4.What kind of budget would you recommend to an inexperienced guy that just starts out?

Cheers.

I just submitted a link to any of my websites and was easily approved

3._ You can promote Cryptos there is alot of content about BTC right now